Cambell Concrete of California, 1640 W Pellisier Rd, Colton, CA 92324, US

Simpson Strong-Tie s primary objective is to help build safer structures. The company is a leader in the timber connector industry in hanger design. Its systems approach to the building process addresses complex engineering and construction issues through research and development, testing and manufacturing. Simpson is ISO 9001:2000 registered and features a wide range of products. Products include panel hangers, angles, clips, bearing enhancer, nails, anchor bolts, shelf brackets, adhesives, drywall stops and wall bracing. Its parent company, Simpson Manufacturing, is a growing international company that also specializes in the manufacture and marketing of building products. Established in the mid-1950s, Simpson Strong-Tie has an office in Brea, Calif.